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348 lines
8.0 KiB
348 lines
8.0 KiB
/*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-12-04 tyx first implementation
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#ifdef RT_USING_USER_MAIN
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#ifndef RT_MAIN_THREAD_STACK_SIZE
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#define RT_MAIN_THREAD_STACK_SIZE 2048
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#endif
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#ifndef RT_MAIN_THREAD_PRIORITY
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#define RT_MAIN_THREAD_PRIORITY (RT_THREAD_PRIORITY_MAX / 3)
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#endif
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#endif
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#ifdef RT_USING_COMPONENTS_INIT
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/*
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* Components Initialization will initialize some driver and components as following
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* order:
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* rti_start --> 0
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* BOARD_EXPORT --> 1
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* rti_board_end --> 1.end
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*
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* DEVICE_EXPORT --> 2
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* COMPONENT_EXPORT --> 3
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* FS_EXPORT --> 4
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* ENV_EXPORT --> 5
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* APP_EXPORT --> 6
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*
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* rti_end --> 6.end
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*
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* These automatically initialization, the driver or component initial function must
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* be defined with:
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* INIT_BOARD_EXPORT(fn);
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* INIT_DEVICE_EXPORT(fn);
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* ...
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* INIT_APP_EXPORT(fn);
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* etc.
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*/
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#pragma section("rti_fn$a", read)
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const char __rti_fn_begin_name[] = "__rti_fn_start";
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__declspec(allocate("rti_fn$a")) const struct rt_init_desc __rti_fn_begin =
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{
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__rti_fn_begin_name,
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NULL
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};
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#pragma section("rti_fn$z", read)
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const char __rti_fn_end_name[] = "__rti_fn_end";
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__declspec(allocate("rti_fn$z")) const struct rt_init_desc __rti_fn_end =
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{
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__rti_fn_end_name,
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NULL
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};
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static int rti_start(void)
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{
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return 0;
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}
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INIT_EXPORT(rti_start, "0");
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static int rti_board_end(void)
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{
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return 0;
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}
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INIT_EXPORT(rti_board_end, "1.end");
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static int rti_end(void)
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{
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return 0;
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}
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INIT_EXPORT(rti_end, "6.end");
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struct rt_init_tag
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{
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const char *level;
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init_fn_t fn;
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#ifdef RT_DEBUGING_AUTO_INIT
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const char *fn_name;
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#endif
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};
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static rt_size_t rt_init_num = 0;
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static struct rt_init_tag rt_init_table[2048] = { 0 };
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static rt_bool_t rt_init_flag = RT_FALSE;
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static int rt_init_objects_sort(void)
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{
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rt_size_t index_i, index_j;
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struct rt_init_tag init_temp = { 0 };
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unsigned int *ptr_begin = (unsigned int *)&__rti_fn_begin;
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unsigned int *ptr_end = (unsigned int *)&__rti_fn_end;
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struct rt_init_tag *table = rt_init_table;
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ptr_begin += (sizeof(struct rt_init_desc) / sizeof(unsigned int));
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if (rt_init_flag)
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return rt_init_num;
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while (*ptr_begin == 0)
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ptr_begin++;
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do (ptr_end--);
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while (*ptr_end == 0);
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while (ptr_begin < ptr_end)
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{
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if (*ptr_begin != 0)
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{
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table->level = ((struct rt_init_desc *)ptr_begin)->level;
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table->fn = ((struct rt_init_desc *)ptr_begin)->fn;
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#ifdef RT_DEBUGING_AUTO_INIT
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table->fn_name = ((struct rt_init_desc *)ptr_begin)->fn_name;
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#endif
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ptr_begin += sizeof(struct rt_init_desc) / sizeof(unsigned int);
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table++;
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rt_init_num += 1;
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}
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else
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{
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ptr_begin++;
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}
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}
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if (rt_init_num == 0) /* no need sort */
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return rt_init_num;
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/* bubble sort algorithms */
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for (index_i = 0; index_i < (rt_init_num - 1); index_i++)
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{
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for (index_j = 0; index_j < ((rt_init_num - 1) - index_i); index_j++)
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{
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if (rt_strcmp(rt_init_table[index_j].level, rt_init_table[index_j + 1].level) > 0)
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{
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init_temp = rt_init_table[index_j];
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rt_init_table[index_j] = rt_init_table[index_j + 1];
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rt_init_table[index_j + 1] = init_temp;
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}
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}
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}
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rt_init_flag = RT_TRUE;
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return rt_init_num;
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}
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/**
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* RT-Thread Components Initialization for board
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*/
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void rt_components_board_init(void)
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{
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const char* lv_start = ".rti_fn.0";
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const char* lv_end = ".rti_fn.1.end";
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rt_size_t index_i;
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int result;
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rt_init_objects_sort();
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for (index_i = 0; index_i < rt_init_num; index_i++)
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{
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if (rt_init_table[index_i].fn)
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{
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if (rt_strcmp(rt_init_table[index_i].level, lv_end) >= 0)
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{
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break;
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}
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#ifdef RT_DEBUGING_AUTO_INIT
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rt_kprintf("initialize %s", rt_init_table[index_i].fn_name);
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result = rt_init_table[index_i].fn();
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rt_kprintf(":%d done\n", result);
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#else
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result = rt_init_table[index_i].fn();
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#endif /* RT_DEBUGING_AUTO_INIT */
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}
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}
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}
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/**
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* RT-Thread Components Initialization
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*/
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void rt_components_init(void)
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{
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const char* lv_start = ".rti_fn.1.end";
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const char* lv_end = ".rti_fn.6.end";
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int result;
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rt_size_t index_i;
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rt_init_objects_sort();
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for (index_i = 0; index_i < rt_init_num; index_i++)
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{
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if (rt_init_table[index_i].fn)
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{
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if (rt_strcmp(rt_init_table[index_i].level, lv_start) <= 0)
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{
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continue;
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}
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if (rt_strcmp(rt_init_table[index_i].level, lv_end) >= 0)
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{
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break;
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}
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#ifdef RT_DEBUGING_AUTO_INIT
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rt_kprintf("initialize %s", rt_init_table[index_i].fn_name);
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result = rt_init_table[index_i].fn();
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rt_kprintf(":%d done\n", result);
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#else
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result = rt_init_table[index_i].fn();
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#endif
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}
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}
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}
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#endif /* RT_USING_COMPONENTS_INIT */
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#ifdef RT_USING_USER_MAIN
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void rt_application_init(void);
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void rt_hw_board_init(void);
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int rtthread_startup(void);
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#if defined(__ARMCC_VERSION)
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extern int $Super$$main(void);
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/* re-define main function */
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int $Sub$$main(void)
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{
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rtthread_startup();
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return 0;
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}
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#elif defined(__ICCARM__)
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extern int main(void);
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/* __low_level_init will auto called by IAR cstartup */
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extern void __iar_data_init3(void);
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int __low_level_init(void)
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{
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// call IAR table copy function.
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__iar_data_init3();
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rtthread_startup();
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return 0;
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}
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#elif defined(__GNUC__)
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/* Add -eentry to arm-none-eabi-gcc argument */
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int entry(void)
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{
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rtthread_startup();
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return 0;
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}
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#endif
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#ifndef RT_USING_HEAP
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/* if there is not enable heap, we should use static thread and stack. */
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rt_align(8)
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static rt_uint8_t main_stack[RT_MAIN_THREAD_STACK_SIZE];
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struct rt_thread main_thread;
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#endif
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/* the system main thread */
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void main_thread_entry(void *parameter)
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{
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extern int main(void);
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#ifdef RT_USING_COMPONENTS_INIT
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/* RT-Thread components initialization */
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rt_components_init();
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#endif
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#ifdef RT_USING_SMP
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rt_hw_secondary_cpu_up();
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#endif
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/* invoke system main function */
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#if defined(__ARMCC_VERSION)
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{
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extern int $Super$$main(void);
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$Super$$main(); /* for ARMCC. */
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}
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#elif defined(__ICCARM__) || defined(__GNUC__) || defined(__TASKING__) || defined(_MSC_VER)
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main();
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#endif
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}
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void rt_application_init(void)
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{
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rt_thread_t tid;
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#ifdef RT_USING_HEAP
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tid = rt_thread_create("main", main_thread_entry, RT_NULL,
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RT_MAIN_THREAD_STACK_SIZE, RT_MAIN_THREAD_PRIORITY, 20);
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RT_ASSERT(tid != RT_NULL);
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#else
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rt_err_t result;
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tid = &main_thread;
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result = rt_thread_init(tid, "main", main_thread_entry, RT_NULL,
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main_stack, sizeof(main_stack), RT_MAIN_THREAD_PRIORITY, 20);
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RT_ASSERT(result == RT_EOK);
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/* if not define RT_USING_HEAP, using to eliminate the warning */
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(void)result;
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#endif
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rt_thread_startup(tid);
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}
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int rtthread_startup(void)
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{
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rt_hw_interrupt_disable();
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/* board level initialization
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* NOTE: please initialize heap inside board initialization.
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*/
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rt_hw_board_init();
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/* show RT-Thread version */
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rt_show_version();
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/* timer system initialization */
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rt_system_timer_init();
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/* scheduler system initialization */
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rt_system_scheduler_init();
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#ifdef RT_USING_SIGNALS
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/* signal system initialization */
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rt_system_signal_init();
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#endif
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/* create init_thread */
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rt_application_init();
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/* timer thread initialization */
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rt_system_timer_thread_init();
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/* idle thread initialization */
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rt_thread_idle_init();
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#ifdef RT_USING_SMP
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rt_hw_spin_lock(&_cpus_lock);
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#endif /*RT_USING_SMP*/
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/* start scheduler */
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rt_system_scheduler_start();
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/* never reach here */
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return 0;
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}
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#endif
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